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Vertical Output Amplifier
Figure 30
The Vertical drive from the HOP panel drives the Vertical Output IC 7811. This IC is located on the
Large Signal panel. Drive is fed to Pin 7 and is output on Pin 5 to drive the three Vertical Yokes. This
IC is powered by the plus and minus 13-volt supplies from the Horizontal Output circuit. A Vertical
pulse on Pin 6 is fed to the sweep failure detection circuit. If there is a failure in the Horizontal or
Vertical sweep, the High Voltage will be shut down.
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